IRR

IRR stands for:

  • Infrared radiometer, measuring instrument on board the European Remote Sensing Satellite
  • Infrared reflectography, visualization painting technique signatures under paintings by recording the infrared reflection
  • Internal Rate of Return, English for Internal Rate of Return
  • International regulation of the Rhine, the Swiss- Austrian company
  • Internet Routing Registry, a higher-level routing policy database, which uses the global RIRs as a source
  • Iranian Rial currency code according to ISO 4217
  • Iraqi Republic Railways Establishment, Code for the property characteristic of a railroad car in the car number
  • Iron Road Railways, a former American railway company, which has risen in the Montreal, Maine and Atlantic Railway

Irr stands for:

  • Irregular galaxy, astronomy

Irr stands for:

  • File extension for scene files of Irrlicht
  • As an adjective for various forms of madness
  • Disambiguation
  • Abbreviation
Regional Internet Registry
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